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NYC/PHL January 7-9 Potential Part Deux


NickD2011

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I'll take my chances with 33 degrees, moderate precipitation, and the sun almost at sunset.

hell, with good rates that would work out for us under a full sun even in early april lol. But how good is the snowfall rate is going to be the question.

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How do you guys feel about pavement temps and forcast highs tomorrow? You feel main rds wet? parkinglots and side streets slushy?

If you're in an area with lots of traffic, pavement/concrete, etc. (NYC metro) I don't think roads will be much of an issue. Temps at or above 32 + light rate of snow + plows/salt/sand + plus tons of traffic = difficulty accumulating snow on the roads. The lesser travelled side streets and parking lots will probably have snow on them, more so outside of the more urbanized areas, but this is going to be a light snowfall for most of us. We're talking a 2-5 or 3-6 type deal over 18-24 hours.

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If you're in an area with lots of traffic, pavement/concrete, etc. (NYC metro) I don't think roads will be much of an issue. Temps at or above 32 + light rate of snow + plows/salt/sand + plus tons of traffic = difficulty accumulating snow on the roads. The lesser travelled side streets and parking lots will probably have snow on them, more so outside of the more urbanized areas, but this is going to be a light snowfall for most of us. We're talking a 2-5 or 3-6 type deal over 18-24 hours.

Is this thing really supposed to last 24 hours? I thought it was going to be 12 hours at most.

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I personally believe this band on a nw/se axis will swing northeast through the area intensifying between PHL/NYC during morning rush hour, but only make for a period of intense snowfall for maybe 2 hours between PHL/NYC, including NYC too...some light snow on either end of that couple hour band swinging through. then it stalls out northeast of the city in my opinion.

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Is this thing really supposed to last 24 hours? I thought it was going to be 12 hours at most.

Sounds like some light snow breaks out tonight especially over N NJ into SE NY, perhaps in the city between 2 and 5 AM. I expect to see at least some light snow around for tomorrow's rush, though nothing that would impede travel - though as we learned last New Year's Eve a light coating of snow and subfreezing temps could pose a problem on untreated roads. It's not really forecast to stop until later tomorrow night, so you figure it's about an 18-24 hour deal depending on your location. I think OKX mentioned in their AFD due to long duration the 24 hour WSW criteria would be used if they chose to upgrade the watch anywhere.

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I personally believe this band on a nw/se axis will swing northeast through the area intensifying between PHL/NYC during morning rush hour, but only make for a period of intense snowfall for maybe 2 hours between PHL/NYC, including NYC too...some light snow on either end of that couple hour band swinging through. then it stalls out northeast of the city in my opinion.

If that two hours falls between 6 am and 8 am we could be in some serious trouble....

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Weenie Storm Watch ;)

If the media keeps throwing out those 3-6 inch totals and we get just an inch or 2 it could get ugly on here on Friday.

Yeah a little damage control should have been attached to a lot of those forecasts. I heard a lot of radio broadcasts just saying 3-6" with no mention of the ridiculous bust potential/possible shifts. When I wrote my articles I made it well known how near impossible it would be to nail this forecast down, and to be very skeptical of any accumulation forecasts you here that are more than 1-3/2-4"

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Some pretty impressive out puts on the latest SREF's individual panels. 12z NAM seems to be holding its ground with regard to the 6z run. 2-4 maybe 5" NNJ north of I80 1-3" south of there and the Catskill Bullseye 8-12" thru 42 hours. All assuming normal ratios. Now whether those figures would accumulate in more urban areas I did not look at soundings. I still think the Catskills get a solid 12" with a few reports of well over a foot in favored higher terrian. elsewhere probably a 6-8" with a few 10" reports in the banding in SE NY with generally 2-5" elsewhere for NNJ north of I78 thru the NYC metro area. Parts of LI may be interesting with accumulating issues perhaps with BL temps vs possibly being in good band for a while. May be a wash and 2-5" there also.

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I don't get it and I can only attribute it to the fact that the blizzard is fresh in everyone's mind and they dont want people to be unprepared. I just don't get the WSW though. I do appreciate that they are taking the impact into consideration so if thats the reason and since its only a Watch that can easily be downgraded to an advisory then I guess it makes sense. Still to me it looks like a widespread 1 to 4" and possibly much more in those bands. I just don't see areawide 4"+ snowfall amounts verifying.

Yeah a little damage control should have been attached to a lot of those forecasts. I heard a lot of radio broadcasts just saying 3-6" with no mention of the ridiculous bust potential/possible shifts. When I wrote my articles I made it well known how near impossible it would be to nail this forecast down, and to be very skeptical of any accumulation forecasts you here that are more than 1-3/2-4"

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Why?

SREFS, which have the highest verification scores of any model, inside of 36 hours, have the entire .25"-.50" line spread out more SW.

I think the PV is digging too far south on the NAM. I also dont see the band slowing down or staling until north of the area. This looks like a 6hr period of snow for NYC in my opinion leaving 1-3 inches, with slightly more NE of the metro area.

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I think the PV is digging too far south on the NAM. I also dont see the band slowing down or staling until north of the area. This looks like a 6hr period of snow for NYC in my opinion leaving 1-3 inches, with slightly more NE of the metro area.

So basically no one does really well with this trough.

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NW NJ to the Catskills and SE Dacks would be my good snow zone. Those areas that do good on SE upslope snow should see the most out of this setup.

Yea, that was being shown on the modeling as getting up to a foot or snow-- at least part of ski country will do well. :thumbsup: Right in time for the weekend, too.

Do you have a take on next week's system? Some potential there?

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